CVE-2018-4056

Name: CVE-2018-4056
Creator: NVD / NIST
Published: 2019-02-05T18:29:00.85+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

CRITICALCVSS 9.8/10EPSS 2.96%

Last modified Jun 17, 2026

CVE-2018-4056 is a critical-severity vulnerability rated 9.8/10 on the CVSS scale. An exploitable SQL injection vulnerability exists in the administrator web portal function of coTURN prior to version 4.5.0.9. A login message with a specially crafted username can cause an SQL injection, resulting in authentication bypass, which could give access to the TURN server administrator web portal. EPSS estimates a 2.96% chance of exploitation in the next 30 days.

Description

An exploitable SQL injection vulnerability exists in the administrator web portal function of coTURN prior to version 4.5.0.9. A login message with a specially crafted username can cause an SQL injection, resulting in authentication bypass, which could give access to the TURN server administrator web portal. An attacker can log in via the external interface of the TURN server to trigger this vulnerability.

Metrics

CVSS 3.1

9.8/10

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

EPSS Probability

2.96%

85.4th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-89

Affected Software

Vendor	Product	Versions
Coturn Project	Coturn	< 4.5.0.9
Debian	Debian Linux	8.0
Debian	Debian Linux	9.0

References

https://lists.debian.org/debian-lts-announce/2019/02/msg00017.htmlMailing List, Third Party Advisory
https://talosintelligence.com/vulnerability_reports/TALOS-2018-0730Exploit, Third Party Advisory
https://www.debian.org/security/2019/dsa-4373Third Party Advisory
https://lists.debian.org/debian-lts-announce/2019/02/msg00017.htmlMailing List, Third Party Advisory
https://talosintelligence.com/vulnerability_reports/TALOS-2018-0730Exploit, Third Party Advisory
https://www.debian.org/security/2019/dsa-4373Third Party Advisory

Timeline

Published: Feb 5, 2019
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2018-4056?

How severe is CVE-2018-4056?

CVE-2018-4056 has a CVSS score of 9.8/10 (CRITICAL severity). The EPSS model estimates a 2.96% probability of exploitation in the next 30 days.

How do I fix CVE-2018-4056?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2018-4056?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST